Three-island integrated still kettle steam system adopting high-position double-layer arrangement
By setting up a boiler room, waste heat recovery platform, and autoclave steam distribution platform on the ground frame of the finished product area, the problems of high ambient temperature, high safety risks, and energy waste in the autoclave waste heat recovery system are solved, and efficient thermal energy management and waste heat recovery are achieved.
Patent Information
- Application Number
- CN202422585836.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In existing autoclave waste heat recovery systems, the autoclave steam distribution platform has a high ambient temperature and poses significant safety risks. The boiler room occupies a large area and the distance between steam supply and consumption is long, resulting in energy waste and heat loss.
The steam system of the three-island integrated autoclave is arranged in a high-level double-layer layout. The boiler room, waste heat recovery platform and autoclave steam distribution platform are set on the ground frame of the finished product area. The autoclave is connected through steam supply and recovery pipelines to achieve efficient thermal energy management.
Reduce factory footprint, improve working environment, eliminate safety risks, and improve energy utilization and waste heat recovery efficiency.
Smart Images
Figure CN223685698U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to autoclaved aerated concrete manufacturing and heat energy recovery technical field, concretely relates to a kind of three-island integrated autoclave steam system using high double-layer arrangement. BACKGROUND
[0002] Autoclaved aerated concrete (for example, aerated brick, board and so on) is with siliceous material and calcareous material as main raw material, mixed with gas-forming agent, through batching, stirring, pouring, pre-cultivation, cutting, autoclaving, maintenance and so on Process is made of light-weight porous silicate product, with the advantages of light weight, high thermal insulation performance, good sound absorption effect.
[0003] In the typical process flow of aerated concrete, autoclaved curing process is a key component in the production and processing of aerated concrete, and the pressure steam used after autoclaved curing contains a lot of heat, which will cause great waste of energy if directly discharged, so many autoclave waste heat recovery and utilization technologies have appeared. In the existing autoclave waste heat recovery system, the autoclave steam distribution platform (island) is usually arranged above the autoclave top, and the boiler house area (island) is arranged in the independent boiler house building outside the workshop. However, due to the large heat dissipation of autoclave, the autoclave steam distribution platform (island) has a high ambient temperature, the working environment is poor, and the autoclave accident steam discharge poses a safety risk to the workers. In addition, arranging the boiler house outdoors not only increases the land occupation, but also increases the steam pipe heat loss due to the increased distance between the boiler house steam supply and the autoclave steam use. UTILITY MODEL CONTENTS
[0004] The utility model aims to provide a three-island integrated autoclave steam system with high double-layer arrangement to improve energy utilization, reduce factory land occupation, improve autoclave steam distribution personnel working environment and eliminate safety risks.
[0005] According to the embodiment of the utility model, an autoclave steam system is provided, which comprises a frame erected on the ground in the finished product area, a boiler house, a waste heat recovery platform and an autoclave steam distribution platform arranged on the frame, the boiler house is connected with the autoclave through the steam supply pipeline of the autoclave steam distribution platform for supplying high-temperature steam to the autoclave; the waste heat recovery platform is connected with the autoclave through the recovery pipeline of the autoclave steam distribution platform for recovering steam and condensate from the autoclave.
[0006] In other examples, the frame is a reinforced concrete structure or a steel structure, which is an integrated or combined frame composed of columns and beams, and the upper surface of the beam is provided with a fixing device for mounting the boiler house and the waste heat recovery platform.
[0007] In other examples, the autoclave is arranged near the finished product area, including a group arranged side by side, and a finished product transport vehicle track is arranged on the ground between the two adjacent columns in the autoclave side-by-side direction.
[0008] In other examples, the boiler room is arranged above the frame and away from the autoclave on one side, including a boiler room body, a plurality of boilers are arranged side by side in the boiler room body along the side-by-side direction of the autoclave, and the boiler chimney is supported and fixed by the frame and the boiler room body.
[0009] In other examples, the boiler room body covers the entire width direction of one side of the frame.
[0010] In other examples, the waste heat recovery platform is arranged above the frame and close to the autoclave on one side, and includes a plurality of storage tanks arranged side by side along the side-by-side direction of the autoclave.
[0011] In other examples, the storage tank includes a condensate recovery high-temperature water storage tank, a condensate recovery low-temperature water storage tank, a waste steam recovery low-pressure steam storage tank, and a waste steam recovery high-pressure steam storage tank.
[0012] In other examples, the recovery pipeline of the autoclave steam supply platform includes: an autoclave waste steam recovery main pipe connected with the autoclave, a waste steam recovery hierarchical storage cylinder connected with the autoclave waste steam recovery main pipe, and the waste steam recovery hierarchical storage cylinder includes four waste steam outlets connected with the inlets of the condensate recovery high-temperature water storage tank, the condensate recovery low-temperature water storage tank, the waste steam recovery low-pressure steam storage tank, and the waste steam recovery high-pressure steam storage tank through corresponding waste steam introduction pipes.
[0013] In other examples, the recovery pipeline of the autoclave steam supply platform includes: a condensate recovery main pipe, one end of which is connected with each autoclave, and the other end is connected with the condensate recovery high-temperature water storage tank or the condensate recovery low-temperature water storage tank.
[0014] In other examples, the steam supply pipeline of the autoclave steam supply platform includes: a boiler steam supply main pipe connected with each boiler, a boiler cylinder connected with the boiler steam supply main pipe, and an autoclave cylinder connected with each autoclave, and the boiler cylinder and the autoclave cylinder are connected through the autoclave steam supply main pipe.
[0015] The utility model reduces the factory area, and greatly improves the overall energy utilization rate. At the same time, the autoclave steam supply platform arranged above the finished product area can improve the working environment of autoclave steam supply personnel and eliminate safety risks. In addition, the waste heat platform arranged above the finished product area can recover autoclave waste steam and condensate waste heat nearby, and improve the waste heat recovery efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0016] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of non-restrictive examples made by referring to the following drawings:
[0017] Figure 1 It is a whole structure schematic diagram of three-island integrated autoclave steam system adopting high-position double-layer arrangement according to the utility model embodiment.
[0018] Figure 2 and Figure 3 is a specific structure diagram of a boiler room;
[0019] Figure 4 is a schematic diagram of a steam system pipeline structure of a steam autoclave according to an embodiment of the utility model. DETAILED DESCRIPTION
[0020] The utility model will be explained in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the related utility model and are not a limitation on the utility model. In addition, it needs to be explained that only the parts related to the utility model are shown in the drawings for the convenience of description.
[0021] It needs to be explained that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be explained in detail below in combination with the drawings and embodiments.
[0022] The existing autoclaved aerated concrete production line basically adopts a plane layout, which involves raw material preparation and storage, batching and pouring, static curing, grouping, autoclave curing and finished product packaging and multiple processes. In view of the problems existing in the existing autoclave waste heat recovery system, the utility model innovatively proposes to set a boiler room area (island), a waste heat platform (island) and an autoclave steam distribution platform (island) above the finished product area of the autoclave connection process, so as to realize efficient energy supply and use management.
[0023] Figure 1 is a schematic diagram of the overall structure of a three-island integrated autoclave steam system using high-level double-layer arrangement according to an embodiment of the utility model. As shown in Figure 1 , a frame 10 is erected on the ground G of the finished product area 200, and a boiler room area (island) 1, a waste heat recovery platform (island) 2 and an autoclave steam distribution platform (island) are arranged on the frame 10. The boiler room area (island) 1 and the waste heat recovery platform (island) 2 respectively transmit heat energy with the autoclave 100 arranged in the autoclave curing area through the autoclave steam distribution platform (island).
[0024] Referring to Figure 2 and Figure 3 , the frame 10 is a reinforced concrete or steel structure, which is composed of a stand column 101 and a cross beam 102 into an integrated or combined frame. The upper surface of the cross beam 102 is provided with a fixing device, such as a pre-buried bolt, for mounting the boiler room area (island) 1 and the waste heat recovery platform (island) 2.
[0025] Although not illustrated in the figure, it can be understood that the autoclave 100 typically comprises a group arranged side by side. In this invention, along the parallel direction of the autoclave 100, a finished product transport trolley track is set on the ground between two adjacent columns 101 for transporting finished products that have completed the autoclave curing process and been removed from the autoclave back to the finished product area via a transfer trolley. For example, in Figure 3 In the embodiment shown, the finished product transport vehicle tracks 201, 202, ..., 20n are respectively set to correspond to the discharge port of an autoclave 100 and pass through the frame 10 from below to reach the finished product mixing station.
[0026] Boiler room area 1 is located on the side above frame 10 away from autoclave 100, including boiler room body 13. Multiple boilers 11 are arranged side by side in the direction parallel to autoclave 100 inside boiler room body 13. Boiler chimney 12 is supported and fixed by frame 10 and boiler room body 13. Each boiler 11 is connected to the corresponding autoclave 100 through the steam supply pipeline of autoclave steam distribution platform (island) 3, and is used to supply high temperature steam to autoclave 100.
[0027] exist Figure 3 In the illustrated embodiment, the boiler room body 13 covers the entire width of one side of the frame 10. As an example, at least two boilers 11 are arranged side-by-side along the autoclave 100 inside the boiler room body 13, with the boiler chimneys 12 of each boiler 11 arranged side-by-side.
[0028] The waste heat recovery platform (island) 2 is located on the side of the frame 10 near the autoclave 100, and includes multiple storage tanks 21 arranged side by side along the autoclave 100. Each storage tank is connected to the corresponding autoclave 100 through the recovery pipeline of the autoclave steam distribution platform (island) for recovering steam and condensate from the autoclave 100.
[0029] In one embodiment, such as Figure 4 As shown, storage tank 21 includes a condensate recovery high-temperature water storage tank, a condensate recovery low-temperature water storage tank, a residual steam recovery low-pressure steam storage tank, and a residual steam recovery high-pressure steam storage tank.
[0030] During the autoclaving process, the high-temperature steam generated in boiler room 1 enters the autoclave steam distribution cylinder 32 through the steam supply pipelines of the autoclave steam distribution platform (island) 3 (including the boiler steam supply main pipe 112, the boiler steam distribution cylinder 31, and the autoclave steam supply main pipe 311), and then multiple steam supply pipelines are led out to supply steam to each autoclave 101. For example, when an autoclave is filled with aerated concrete blocks or concrete slabs, the electrically controlled valve (or mesh gate) of the autoclave's steam supply pipeline is opened to supply steam to the autoclave.
[0031] A cooking cycle of an autoclave is roughly divided into three stages: (1) Autoclave pressurization stage: The autoclave begins to pressurize, and the pressurization process takes about 2.5 hours. When the autoclave pressure reaches 1.25 MPa, the pressurization of the autoclave is completed and it enters the pressure stabilization stage; (2) Pressure stabilization stage: During the pressure stabilization stage, the autoclave pressure is maintained at 1.25 MPa for about 8 hours. When the time reaches 8 hours, the pressure stabilization process ends and the autoclave enters the pressure reduction and steam discharge stage; (3) Pressure reduction and steam discharge stage: During the pressure reduction and steam discharge stage, the autoclave pressure drops from 1.25 MPa to 0 MPa, and the pressure reduction and steam discharge process takes about 3 hours.
[0032] In addition, the autoclaving process produces a large amount of condensate. For example, in one process flow, a complete autoclaving process in an autoclave produces approximately 15 tons of condensate, with a maximum discharge temperature of 190°C. (Reference) Figure 4 Three drainage pipes 102 are installed in the condensate drain tank under each autoclave 101: one high-pressure condensate drain pipe, one low-pressure condensate drain pipe, and one open condensate drain pipe. The high-pressure condensate pipe leading out of the condensate drain tank merges into the high-pressure condensate main pipe, the low-pressure condensate pipe merges into the low-pressure condensate main pipe, and the atmospheric pressure (open) condensate pipe merges into the atmospheric pressure condensate main pipe. Figure 4 (The numbers 103 represent the various condensate mains). The high-pressure condensate main sends the high-temperature, high-pressure condensate from the autoclave to the high-temperature condensate recovery tank. The low-pressure and atmospheric-pressure condensate mains send the low-temperature, low-pressure condensate from the autoclave to the low-temperature condensate recovery tank (the low-temperature water tank is unpressurized). In addition to collecting condensate, the high-temperature and low-temperature condensate recovery tanks also receive steam discharged from the autoclave through their respective residual steam inlet pipes.
[0033] During the depressurization and steam exhaust stage, the steam discharged from each autoclave 101 enters the autoclave residual steam collection cylinder 33 (or exhaust cylinder) through the autoclave residual steam exhaust pipe. The outlet of the autoclave residual steam collection cylinder 33 is connected to the autoclave residual steam recovery main pipe 331, which guides the autoclave residual steam into the residual steam recovery and graded storage distribution cylinder 34.
[0034] The residual steam recovery and tiered storage steam distribution cylinder 34 includes four residual steam outlets, which are respectively connected to the inlets of the condensate recovery high-temperature water storage tank, the condensate recovery low-temperature water storage tank, the residual steam recovery low-pressure steam storage tank, and the residual steam recovery high-pressure steam storage tank through corresponding residual steam inlet pipes 341.
[0035] During the initial exhaust stage of the autoclave, the residual steam pressure is high. The high-pressure residual steam is introduced into the high-pressure steam recovery storage tank through the residual steam inlet pipe. This stage involves high-pressure exhaust and storage of residual steam, creating conditions for its high-energy and high-efficiency utilization in the later stage.
[0036] When the autoclave exhaust pressure is slightly low, the residual steam is introduced into the residual steam recovery low-pressure steam storage tank through the residual steam inlet pipe. This stage involves low-pressure discharge and low-pressure storage of the residual steam.
[0037] When the steam pressure of the steam autoclave is reduced again, the remaining steam is introduced into the condensate recovery high-temperature water tank through a remaining steam introduction pipe, and the condensate in the tank is heated. This stage is low-pressure discharge of the remaining steam, and the high-temperature hot water tank is heated.
[0038] When the steam pressure of the steam autoclave is further reduced, the remaining steam is introduced into the condensate recovery low-temperature water tank through a remaining steam introduction pipe, and the condensate in the tank is heated. This stage is low-pressure discharge of the remaining steam, and the low-temperature hot water tank is heated.
[0039] In the utility model, since the independent boiler house building is not required, the factory area is reduced. At the same time, since the steam autoclave is adjacent to the finished product area process, the boiler house is arranged in the area, and the steam pipeline is laid in the workshop, the steam autoclave is supplied with steam nearby, the steam pipeline can be shortened, the steam pipe network loss is reduced, and the overall energy utilization rate is greatly improved.
[0040] In addition, the steam autoclave steam distribution platform (island) arranged above the finished product area can improve the working environment of the steam autoclave steam distribution personnel and eliminate safety risks.
[0041] In addition, the waste heat platform (island) arranged above the finished product area can recover the steam autoclave remaining steam and condensate waste heat nearby, and the waste heat recovery efficiency is improved.
[0042] Although the utility model is described in detail through the above embodiments, the utility model is not limited to the above embodiments, and the technical solutions of the embodiments of the utility model can be modified or replaced without departing from the spirit and scope of the embodiments of the utility model.
Claims
1. An autoclave steam system characterized by, The frame (10) is set up on the ground in the finished product area, the boiler room (1), the waste heat recovery platform (2) and the autoclave steam distribution platform (3) are arranged on the frame (10), the boiler room (1) is connected with the autoclave (100) through the steam supply pipeline of the autoclave steam distribution platform (3) and is used for supplying high-temperature steam for the autoclave (100); the waste heat recovery platform (2) is connected with the autoclave (100) through the recovery pipeline of the autoclave steam distribution platform (3) and is used for recovering steam and condensate water from the autoclave (100).
2. The autoclave steam system of claim 1, wherein, The frame (10) is a reinforced concrete structure or a steel structure, and is composed of a stand column (101) and a cross beam (102) to form an integrated or combined frame, and a fixing device for installing the boiler room (1) and the waste heat recovery platform (2) is arranged on the upper surface of the cross beam (102).
3. The autoclave steam system of claim 2, wherein, The autoclave (100) is arranged near the finished product area and includes a plurality of autoclaves arranged in parallel, and the finished product transport track (201, 202, …, 20n) is arranged on the ground between the adjacent two stand columns (101) in the direction parallel to the autoclaves (100).
4. The autoclave steam system of claim 3, wherein, The boiler room (1) is arranged on the frame (10) and is away from the autoclave (100) on one side, and includes a boiler room body (13), a plurality of boilers (11) are arranged in parallel in the direction parallel to the autoclaves (100) in the boiler room body (13), and a boiler chimney (12) is supported and fixed by the frame (10) and the boiler room body (13).
5. The autoclave steam system of claim 4, wherein, The boiler room body (13) covers the entire width direction of one side of the frame (10).
6. The autoclave steam system of claim 3, wherein, The waste heat recovery platform (2) is arranged on the frame (10) and is close to the autoclave (100) on one side, and includes a plurality of storage tanks arranged in parallel in the direction parallel to the autoclaves (100).
7. The autoclave steam system of claim 6, wherein, The storage tanks include a condensate recovery high-temperature water storage tank, a condensate recovery low-temperature water storage tank, a waste steam recovery low-pressure steam storage tank and a waste steam recovery high-pressure steam storage tank.
8. The autoclave steam system of claim 7, wherein, The recovery pipeline of the autoclave steam distribution platform (3) includes: an autoclave waste steam recovery main pipe connected with the autoclave (100), a waste steam recovery hierarchical storage cylinder (34) connected with the autoclave waste steam recovery main pipe, and the waste steam recovery hierarchical storage cylinder (34) includes four waste steam outlets connected with the inlets of the condensate recovery high-temperature water storage tank, the condensate recovery low-temperature water storage tank, the waste steam recovery low-pressure steam storage tank and the waste steam recovery high-pressure steam storage tank through corresponding waste steam guide pipes.
9. The autoclave steam system of claim 8, wherein, The recovery pipeline of the autoclave steam distribution platform (3) includes: a condensate recovery main pipe, one end of which is connected with each autoclave (100), and the other end of which is connected with the condensate recovery high-temperature water storage tank or the condensate recovery low-temperature water storage tank.
10. The autoclave steam system of claim 8, wherein, The steam supply pipeline of the autoclave steam distribution platform (3) includes: a boiler steam supply main pipe (112) connected with each boiler (11), a boiler cylinder (31) connected with the boiler steam supply main pipe (112), and an autoclave cylinder (32) connected with each autoclave (100), and the boiler cylinder (31) and the autoclave cylinder (32) are connected through an autoclave steam supply main pipe (311).